Details for: OAT

Gene ID: 4942

Gene Type:  Protein-coding  - A gene that serves as a template for producing a messenger RNA (mRNA) molecule, which is then translated into a functional protein.

Symbol: OAT

Ensembl ID: ENSG00000065154

Description: ornithine aminotransferase

Selected Context(s):  Overall

Cell Significance Landscape

Contexts:

Associated with

Significant Cells

Cell Significance Index (CSI) scores for the chosen context(s)

  • intestinal epithelial cell CL0002563
    CSI 58.5
    rCSI 61.14%
    PRS 59.11
  • colonocyte CL1000347
    CSI 42.03
    rCSI 60.24%
    PRS 65.06
  • enterocyte CL0000584
    CSI 36.46
    rCSI 58.8%
    PRS 64.89
  • stem cell CL0000034
    CSI 29.58
    rCSI 28.52%
    PRS 51.63
  • respiratory suprabasal cell CL4033048
    CSI 28.14
    rCSI 36.09%
    PRS 65.85
  • intestinal crypt stem cell of small intestine CL0009017
    CSI 23.63
    rCSI 63.69%
    PRS 68.45
  • respiratory basal cell CL0002633
    CSI 22.44
    rCSI 23.24%
    PRS 66.69
  • secretory cell CL0000151
    CSI 20.83
    rCSI 21.74%
    PRS 61.36
  • multi-ciliated epithelial cell CL0005012
    CSI 18.5
    rCSI 18.47%
    PRS 54.28
  • BEST4+ enteroycte CL4030026
    CSI 18.25
    rCSI 22.7%
    PRS 62.92
  • epithelial cell of lower respiratory tract CL0002632
    CSI 17.59
    rCSI 13.64%
    PRS 62.87
  • blood vessel endothelial cell CL0000071
    CSI 17.5
    rCSI 36.32%
    PRS 58.37
  • forebrain radial glial cell CL0013000
    CSI 16.89
    rCSI 54.18%
    PRS 66.31
  • central memory CD8-positive, alpha-beta T cell CL0000907
    CSI 16.11
    rCSI 10.85%
    PRS 74.17
  • placental villous trophoblast CL2000060
    CSI 15.37
    rCSI 23.74%
    PRS 59.19
  • transit amplifying cell of small intestine CL0009012
    CSI 15.04
    rCSI 66.03%
    PRS 75.82
  • naive T cell CL0000898
    CSI 13.66
    rCSI 9.51%
    PRS 76.29
  • renal alpha-intercalated cell CL0005011
    CSI 13.61
    rCSI 18.2%
    PRS 69.92
  • tuft cell of colon CL0009041
    CSI 13.5
    rCSI 31.45%
    PRS 73.49
  • CD14-positive, CD16-positive monocyte CL0002397
    CSI 13.29
    rCSI 17.42%
    PRS 74.81
  • transit amplifying cell of colon CL0009011
    CSI 12.78
    rCSI 15.01%
    PRS 63.41
  • retina horizontal cell CL0000745
    CSI 12.19
    rCSI 18.58%
    PRS 57.31
  • tracheal goblet cell CL1000329
    CSI 12.01
    rCSI 26.21%
    PRS 74.86
  • paneth cell of epithelium of small intestine CL1000343
    CSI 11.74
    rCSI 32.9%
    PRS 72.65
  • epithelial cell of lung CL0000082
    CSI 11.66
    rCSI 9.66%
    PRS 60.18
  • erythroblast CL0000765
    CSI 11.59
    rCSI 30.75%
    PRS 72.66
  • transit amplifying cell CL0009010
    CSI 11.36
    rCSI 17.38%
    PRS 74.55
  • skin fibroblast CL0002620
    CSI 11.15
    rCSI 9.61%
    PRS 66.66
  • bronchial goblet cell CL1000312
    CSI 11.1
    rCSI 44.38%
    PRS 77.1
  • retinal blood vessel endothelial cell CL0002585
    CSI 10.54
    rCSI 16.83%
    PRS 65.36
  • VIP GABAergic cortical interneuron CL4023016
    CSI 10.44
    rCSI 12.47%
    PRS 42.67
  • perivascular cell CL4033054
    CSI 10.28
    rCSI 14.05%
    PRS 67.07
  • intestinal tuft cell CL0019032
    CSI 9.7
    rCSI 14.83%
    PRS 65.32
  • enterocyte of epithelium of large intestine CL0002071
    CSI 9.44
    rCSI 49.59%
    PRS 71.06
  • type L enteroendocrine cell CL0002279
    CSI 9.4
    rCSI 17.65%
    PRS 76.36
  • colon epithelial cell CL0011108
    CSI 9.23
    rCSI 9.66%
    PRS 57.56
  • microcirculation associated smooth muscle cell CL0008035
    CSI 9.19
    rCSI 26.6%
    PRS 62.49
  • activated CD4-positive, alpha-beta T cell CL0000896
    CSI 9.16
    rCSI 8.46%
    PRS 80.52
  • melanocyte CL0000148
    CSI 9.08
    rCSI 6.73%
    PRS 53.73
  • tracheobronchial smooth muscle cell CL0019019
    CSI 9.08
    rCSI 16.01%
    PRS 69.37
  • deuterosomal cell CL4033044
    CSI 8.77
    rCSI 29.66%
    PRS 65.14
  • club cell CL0000158
    CSI 8.73
    rCSI 12.78%
    PRS 57.14
  • pulmonary artery endothelial cell CL1001568
    CSI 8.7
    rCSI 11.84%
    PRS 73
  • goblet cell CL0000160
    CSI 8.56
    rCSI 8.09%
    PRS 60.6
  • mammary gland epithelial cell CL0002327
    CSI 8.36
    rCSI 29.34%
    PRS 73.46
  • tracheobronchial serous cell CL0019001
    CSI 8.17
    rCSI 35.32%
    PRS 73.71
  • erythroid lineage cell CL0000764
    CSI 7.84
    rCSI 50.42%
    PRS 78.77
  • primitive red blood cell CL0002355
    CSI 7.72
    rCSI 41.67%
    PRS 73.51
  • paneth cell CL0000510
    CSI 7.65
    rCSI 11.3%
    PRS 77.04
  • myeloid dendritic cell CL0000782
    CSI 7.49
    rCSI 10.85%
    PRS 77.24
  • lung macrophage CL1001603
    CSI 7.42
    rCSI 16.58%
    PRS 68.86
  • M cell of gut CL0000682
    CSI 7.18
    rCSI 7.63%
    PRS 71.48
  • lung neuroendocrine cell CL1000223
    CSI 7.17
    rCSI 10.61%
    PRS 66.38
  • extravillous trophoblast CL0008036
    CSI 7.06
    rCSI 8.74%
    PRS 57.55
  • ciliated columnar cell of tracheobronchial tree CL0002145
    CSI 6.85
    rCSI 15.61%
    PRS 57.53
  • luminal epithelial cell of mammary gland CL0002326
    CSI 6.83
    rCSI 12.4%
    PRS 76.38
  • radial glial cell CL0000681
    CSI 6.79
    rCSI 9.43%
    PRS 59.69
  • interstitial cell of Cajal CL0002088
    CSI 6.73
    rCSI 8.57%
    PRS 67.67
  • myofibroblast cell CL0000186
    CSI 6.58
    rCSI 9.11%
    PRS 62.17
  • mesenchymal stem cell CL0000134
    CSI 6.43
    rCSI 70.39%
    PRS 73.7
  • respiratory hillock cell CL4030023
    CSI 6.32
    rCSI 11.28%
    PRS 74.49
  • common myeloid progenitor CL0000049
    CSI 6.27
    rCSI 5.07%
    PRS 62.45
  • ionocyte CL0005006
    CSI 6.27
    rCSI 6.72%
    PRS 60.4
  • erythrocyte CL0000232
    CSI 6.26
    rCSI 14.21%
    PRS 65.14
  • myoepithelial cell CL0000185
    CSI 6.22
    rCSI 15.75%
    PRS 69.09
  • fibroblast of cardiac tissue CL0002548
    CSI 6.21
    rCSI 29.76%
    PRS 61.29
  • ciliated cell CL0000064
    CSI 6.06
    rCSI 9.81%
    PRS 57.69
  • intestine goblet cell CL0019031
    CSI 5.77
    rCSI 5.12%
    PRS 59.1
  • epithelial cell CL0000066
    CSI 5.76
    rCSI 8.84%
    PRS 57.15
  • keratinocyte CL0000312
    CSI 5.62
    rCSI 4.71%
    PRS 65.37
  • double negative thymocyte CL0002489
    CSI 5.53
    rCSI 3.84%
    PRS 72.19
  • L5 extratelencephalic projecting glutamatergic cortical neuron CL4023041
    CSI 5.45
    rCSI 19.6%
    PRS 41.3
  • effector CD4-positive, alpha-beta T cell CL0001044
    CSI 5.43
    rCSI 15.57%
    PRS 80.81
  • cerebral cortex GABAergic interneuron CL0010011
    CSI 5.36
    rCSI 15.83%
    PRS 64.23
  • alveolar adventitial fibroblast CL4028006
    CSI 5.32
    rCSI 8.4%
    PRS 63.41
  • bronchus fibroblast of lung CL2000093
    CSI 5.31
    rCSI 4.31%
    PRS 61.63
  • glioblast CL0000030
    CSI 5.28
    rCSI 8.43%
    PRS 53.72
  • CD8-positive, alpha-beta memory T cell CL0000909
    CSI 5.27
    rCSI 5.51%
    PRS 83.04
  • fibroblast of lung CL0002553
    CSI 5.2
    rCSI 4.84%
    PRS 61.66
  • erythroid progenitor cell CL0000038
    CSI 5.16
    rCSI 29.61%
    PRS 70.18
  • pancreatic stellate cell CL0002410
    CSI 4.95
    rCSI 28.78%
    PRS 70.21
  • Mueller cell CL0000636
    CSI 4.91
    rCSI 11.21%
    PRS 52.93
  • sncg GABAergic cortical interneuron CL4023015
    CSI 4.9
    rCSI 7.88%
    PRS 44.95
  • basal cell CL0000646
    CSI 4.84
    rCSI 6.48%
    PRS 61.4
  • CD4-positive helper T cell CL0000492
    CSI 4.83
    rCSI 3.65%
    PRS 74.93
  • mucus secreting cell CL0000319
    CSI 4.79
    rCSI 7.6%
    PRS 72.23
  • rod bipolar cell CL0000751
    CSI 4.78
    rCSI 8.6%
    PRS 54.11
  • smooth muscle cell CL0000192
    CSI 4.78
    rCSI 11.4%
    PRS 65.66
  • megakaryocyte-erythroid progenitor cell CL0000050
    CSI 4.7
    rCSI 4.25%
    PRS 57.84
  • pulmonary ionocyte CL0017000
    CSI 4.6
    rCSI 5.6%
    PRS 68.55
  • enteroendocrine cell CL0000164
    CSI 4.56
    rCSI 6.24%
    PRS 62.77
  • Bergmann glial cell CL0000644
    CSI 4.53
    rCSI 6.19%
    PRS 54.75
  • ependymal cell CL0000065
    CSI 4.51
    rCSI 9.15%
    PRS 40.62
  • enterocyte of epithelium of small intestine CL1000334
    CSI 4.5
    rCSI 69.58%
    PRS 78.66
  • retinal ganglion cell CL0000740
    CSI 4.47
    rCSI 9.88%
    PRS 47.31
  • respiratory goblet cell CL0002370
    CSI 4.46
    rCSI 48.47%
    PRS 76.05
  • adventitial cell CL0002503
    CSI 4.43
    rCSI 10.58%
    PRS 69.79
  • CD4-positive, alpha-beta thymocyte CL0000810
    CSI 4.36
    rCSI 3.5%
    PRS 81.45
  • neural crest cell CL0011012
    CSI 4.25
    rCSI 3.36%
    PRS 47.92
  • small intestine goblet cell CL1000495
    CSI 4.24
    rCSI 9.28%
    PRS 69.37
  • mesenchymal lymphangioblast CL0005021
    CSI 0.2
    rCSI 3.9%
    PRS 82.6%
  • cytotoxic T cell CL0000910
    CSI 0.2
    rCSI 1.1%
    PRS 70.6%
  • blood vessel smooth muscle cell CL0019018
    CSI 0.2
    rCSI 1.8%
    PRS 54.5%
  • central nervous system neuron CL2000029
    CSI 0.4
    rCSI 2.6%
    PRS 47.9%
  • L6b glutamatergic cortical neuron CL4023038
    CSI 0.4
    rCSI 1.2%
    PRS 44.5%
  • serous secreting cell of bronchus submucosal gland CL4033005
    CSI 0.4
    rCSI 2.4%
    PRS 80.7%
  • L4 intratelencephalic projecting glutamatergic neuron CL4030063
    CSI 0.5
    rCSI 1.3%
    PRS 48.5%
  • enteroglial cell CL4040002
    CSI 0.6
    rCSI 3.1%
    PRS 66.7%
  • effector memory CD8-positive, alpha-beta T cell, terminally differentiated CL0001062
    CSI 0.6
    rCSI 2.9%
    PRS 73.5%
  • pancreatic PP cell CL0002275
    CSI 0.6
    rCSI 2.3%
    PRS 73.9%
  • promonocyte CL0000559
    CSI 0.6
    rCSI 1.1%
    PRS 69.9%
  • L5/6 near-projecting glutamatergic neuron CL4030067
    CSI 0.7
    rCSI 2.4%
    PRS 48.1%
  • near-projecting glutamatergic cortical neuron CL4023012
    CSI 0.9
    rCSI 3.5%
    PRS 43.7%
  • caudal ganglionic eminence derived cortical interneuron CL4023064
    CSI 1.0
    rCSI 1.7%
    PRS 42.0%
  • lamp5 GABAergic cortical interneuron CL4023011
    CSI 1.0
    rCSI 1.7%
    PRS 42.9%
  • promyelocyte CL0000836
    CSI 1.0
    rCSI 1.5%
    PRS 70.6%
  • type B pancreatic cell CL0000169
    CSI 1.1
    rCSI 2.4%
    PRS 59.0%
  • pancreatic ductal cell CL0002079
    CSI 1.1
    rCSI 2.2%
    PRS 64.0%
  • corticothalamic-projecting glutamatergic cortical neuron CL4023013
    CSI 1.1
    rCSI 6.7%
    PRS 44.2%
  • hair follicular keratinocyte CL2000092
    CSI 1.2
    rCSI 20.0%
    PRS 83.4%
  • keratocyte CL0002363
    CSI 1.3
    rCSI 3.0%
    PRS 69.0%
  • T-helper 17 cell CL0000899
    CSI 1.4
    rCSI 1.1%
    PRS 82.3%
  • granulocyte monocyte progenitor cell CL0000557
    CSI 1.4
    rCSI 1.2%
    PRS 66.0%
  • OFF-bipolar cell CL0000750
    CSI 1.4
    rCSI 1.9%
    PRS 68.2%
  • colon goblet cell CL0009039
    CSI 1.4
    rCSI 3.3%
    PRS 70.2%
  • mesenchymal cell CL0008019
    CSI 1.4
    rCSI 3.6%
    PRS 55.3%
  • myeloid leukocyte CL0000766
    CSI 1.4
    rCSI 1.3%
    PRS 62.5%
  • dendritic cell, human CL0001056
    CSI 1.4
    rCSI 2.2%
    PRS 70.1%
  • intermediate monocyte CL0002393
    CSI 1.4
    rCSI 2.2%
    PRS 65.2%
  • serous secreting cell CL0000313
    CSI 1.4
    rCSI 7.3%
    PRS 85.1%
  • activated CD8-positive, alpha-beta T cell, human CL0001049
    CSI 1.5
    rCSI 2.5%
    PRS 79.1%
  • retinal cone cell CL0000573
    CSI 1.5
    rCSI 2.4%
    PRS 50.6%
  • brush cell CL0002204
    CSI 1.5
    rCSI 3.0%
    PRS 78.0%
  • centrilobular region hepatocyte CL0019029
    CSI 1.5
    rCSI 4.0%
    PRS 65.0%
  • Hofbauer cell CL3000001
    CSI 1.5
    rCSI 2.9%
    PRS 71.6%
  • kidney connecting tubule epithelial cell CL1000768
    CSI 1.6
    rCSI 3.9%
    PRS 50.5%
  • tendon cell CL0000388
    CSI 1.6
    rCSI 4.1%
    PRS 76.9%
  • amacrine cell CL0000561
    CSI 1.6
    rCSI 4.6%
    PRS 50.8%
  • enteric smooth muscle cell CL0002504
    CSI 1.6
    rCSI 2.3%
    PRS 63.5%
  • muscle cell CL0000187
    CSI 1.7
    rCSI 3.5%
    PRS 79.5%
  • CD1c-positive myeloid dendritic cell CL0002399
    CSI 1.7
    rCSI 2.1%
    PRS 70.0%
  • glycinergic amacrine cell CL4030028
    CSI 1.7
    rCSI 4.5%
    PRS 58.7%
  • sst GABAergic cortical interneuron CL4023017
    CSI 1.7
    rCSI 2.2%
    PRS 44.1%
  • intestinal crypt stem cell of colon CL0009043
    CSI 1.7
    rCSI 13.0%
    PRS 77.4%
  • elicited macrophage CL0000861
    CSI 1.8
    rCSI 1.7%
    PRS 70.0%
  • smooth muscle cell of prostate CL1000487
    CSI 1.8
    rCSI 10.7%
    PRS 76.5%
  • luminal cell of prostate epithelium CL0002340
    CSI 1.8
    rCSI 9.8%
    PRS 73.5%
  • lung ciliated cell CL1000271
    CSI 1.9
    rCSI 2.1%
    PRS 51.1%
  • IgA plasma cell CL0000987
    CSI 1.9
    rCSI 1.9%
    PRS 75.7%
  • CD8-positive, CD28-negative, alpha-beta regulatory T cell CL0000920
    CSI 1.9
    rCSI 3.7%
    PRS 78.6%
  • choroid plexus epithelial cell CL0000706
    CSI 1.9
    rCSI 3.1%
    PRS 50.4%
  • mature alpha-beta T cell CL0000791
    CSI 1.9
    rCSI 6.9%
    PRS 80.6%
  • activated type II NK T cell CL0000931
    CSI 1.9
    rCSI 2.2%
    PRS 77.3%
  • alternatively activated macrophage CL0000890
    CSI 1.9
    rCSI 2.4%
    PRS 73.1%
  • epithelial cell of esophagus CL0002252
    CSI 2.0
    rCSI 19.2%
    PRS 78.3%
  • podocyte CL0000653
    CSI 2.0
    rCSI 8.8%
    PRS 60.6%
  • CD8-positive, alpha-beta cytotoxic T cell CL0000794
    CSI 2.0
    rCSI 2.4%
    PRS 80.7%
  • basal cell of epithelium of trachea CL1000348
    CSI 2.0
    rCSI 14.1%
    PRS 75.5%
  • lung secretory cell CL1000272
    CSI 2.0
    rCSI 5.0%
    PRS 59.5%
  • ciliated epithelial cell CL0000067
    CSI 2.0
    rCSI 1.8%
    PRS 48.9%
  • endocrine cell CL0000163
    CSI 2.2
    rCSI 11.1%
    PRS 87.7%
  • group 3 innate lymphoid cell CL0001071
    CSI 2.2
    rCSI 1.6%
    PRS 66.6%
  • pancreatic A cell CL0000171
    CSI 2.2
    rCSI 2.3%
    PRS 64.7%
  • granulocyte CL0000094
    CSI 2.2
    rCSI 3.4%
    PRS 70.6%
  • duct epithelial cell CL0000068
    CSI 2.2
    rCSI 3.3%
    PRS 65.6%
  • neural progenitor cell CL0011020
    CSI 2.3
    rCSI 10.1%
    PRS 51.6%
  • mucous neck cell CL0000651
    CSI 2.3
    rCSI 3.3%
    PRS 71.9%
  • alveolar type 1 fibroblast cell CL4028004
    CSI 2.4
    rCSI 2.6%
    PRS 64.9%
  • peripheral nervous system neuron CL2000032
    CSI 2.4
    rCSI 3.2%
    PRS 52.8%
  • chondrocyte CL0000138
    CSI 2.4
    rCSI 3.8%
    PRS 53.4%
  • acinar cell of salivary gland CL0002623
    CSI 2.4
    rCSI 56.2%
    PRS 80.2%
  • conjunctival epithelial cell CL1000432
    CSI 2.4
    rCSI 3.7%
    PRS 61.7%
  • megakaryocyte CL0000556
    CSI 2.5
    rCSI 10.7%
    PRS 73.6%
  • stratified epithelial cell CL0000079
    CSI 2.5
    rCSI 15.3%
    PRS 80.1%
  • pvalb GABAergic cortical interneuron CL4023018
    CSI 2.5
    rCSI 3.1%
    PRS 41.0%
  • nasal mucosa goblet cell CL0002480
    CSI 2.5
    rCSI 2.9%
    PRS 68.7%
  • vascular leptomeningeal cell CL4023051
    CSI 2.5
    rCSI 4.5%
    PRS 53.1%
  • basal-myoepithelial cell of mammary gland CL0002324
    CSI 2.6
    rCSI 4.9%
    PRS 79.5%
  • hematopoietic stem cell CL0000037
    CSI 2.6
    rCSI 1.8%
    PRS 64.2%
  • hepatocyte CL0000182
    CSI 2.6
    rCSI 4.7%
    PRS 60.2%
  • pancreatic D cell CL0000173
    CSI 2.7
    rCSI 2.7%
    PRS 63.6%
  • acinar cell CL0000622
    CSI 2.7
    rCSI 4.0%
    PRS 72.7%
  • Kupffer cell CL0000091
    CSI 2.8
    rCSI 6.3%
    PRS 61.0%
  • cerebral cortex endothelial cell CL1001602
    CSI 2.8
    rCSI 4.8%
    PRS 51.3%
  • mononuclear phagocyte CL0000113
    CSI 2.9
    rCSI 6.3%
    PRS 65.4%
  • foveolar cell of stomach CL0002179
    CSI 2.9
    rCSI 6.2%
    PRS 72.5%
  • astrocyte of the cerebral cortex CL0002605
    CSI 2.9
    rCSI 6.6%
    PRS 43.6%
  • L2/3-6 intratelencephalic projecting glutamatergic neuron CL4023040
    CSI 3.0
    rCSI 7.2%
    PRS 41.5%
  • cerebral cortex neuron CL0010012
    CSI 3.0
    rCSI 12.1%
    PRS 55.6%
  • type EC enteroendocrine cell CL0000577
    CSI 3.0
    rCSI 10.7%
    PRS 70.1%
  • chandelier pvalb GABAergic cortical interneuron CL4023036
    CSI 3.1
    rCSI 9.7%
    PRS 47.1%
  • mesodermal cell CL0000222
    CSI 3.1
    rCSI 3.7%
    PRS 59.0%
  • retinal bipolar neuron CL0000748
    CSI 3.1
    rCSI 5.9%
    PRS 49.5%
  • squamous epithelial cell CL0000076
    CSI 3.1
    rCSI 7.4%
    PRS 64.9%
  • pro-B cell CL0000826
    CSI 3.1
    rCSI 2.6%
    PRS 63.2%
  • ON-bipolar cell CL0000749
    CSI 3.2
    rCSI 4.7%
    PRS 62.7%
  • epithelial cell of proximal tubule CL0002306
    CSI 3.2
    rCSI 7.9%
    PRS 54.7%
  • lung pericyte CL0009089
    CSI 3.4
    rCSI 8.9%
    PRS 70.0%
  • basal cell of prostate epithelium CL0002341
    CSI 3.4
    rCSI 9.8%
    PRS 73.5%
  • inhibitory interneuron CL0000498
    CSI 3.4
    rCSI 7.9%
    PRS 50.2%

Cell ID: Standard Cell Ontology term used for mapping and comparing cells across experiments. Ensures consistency in analyzing cellular functions across tissues.
Fold Change: Represents the ratio of the current Cell Significance Index to the Cell Significance Index Threshold, indicating how much the gene expression has changed compared to a baseline.
Cell Significance Index: Reflects how strongly a gene is expressed in this specific cell.

Cell ID: Standard Cell Ontology term used for mapping and comparing cells across experiments. Ensures consistency in analyzing cellular functions across tissues.
Fold Change: Represents the ratio of the current Cell Significance Index to the Cell Significance Index Threshold, indicating how much the gene expression has changed compared to a baseline.
Cell Significance Index: Reflects how strongly a gene is expressed in this cell type. Calculated using techniques like effect size estimation and bootstrapping for reliability.

Cell ID: Standard Cell Ontology term used for mapping and comparing cells across experiments. Ensures consistency in analyzing cellular functions across tissues.
Fold Change: Represents the ratio of the current Cell Significance Index to the Cell Significance Index Threshold, indicating how much the gene expression has changed compared to a baseline.
Cell Significance Index: Reflects how strongly a gene is expressed in this cell type. Calculated using techniques like effect size estimation and bootstrapping for reliability.
Network Configuration

Explore relationships of the current gene. Select an Interaction Source: 'ONTOLOGY' for shared pathways (GO/Reactome) or 'STRING' for protein-protein interactions. Further refine by selecting context genes and comparing Cell Significance Index (CSI) scores between baseline and target cell types and their specific contexts.

Comma-separated if multiple.
Comma-separated if multiple.

Legend:
  • Query Gene
  • Node Color (Target Cell CSI, relative to current network):
    • Very High
    • High
    • Medium
    • Low
    • Very Low
    • CSI N/A
  • Node Size: Proportional to Target Cell CSI magnitude
  • STRING PPI Edge
  • Shared Pathway Edge (ONTOLOGY)

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Other Information

This section provides additional information about the gene, including a description generated by an AI language model and details about associated proteins.

## Summary [OAT](/details-gene/4942), or Ornithine Aminotransferase, is a protein-coding gene located on chromosome 10q26.13. It encodes a key mitochondrial enzyme that catalyzes the interconversion of ornithine and alpha-ketoglutarate to glutamate-gamma-semialdehyde and L-glutamate. This function places it at a critical junction in the metabolism of amino acids, particularly linking the urea cycle to the catabolism of arginine and the biosynthesis of proline and glutamate. Expression data indicates that **Overall**, [OAT](/details-gene/4942) is most significantly expressed in highly proliferative and metabolically active tissues, particularly various types of epithelial cells such as [intestinal epithelial cell](/details-cell/CL0002563) and [colonocyte](/details-cell/CL1000347). Deficiencies in [OAT](/details-gene/4942) are causally linked to the rare autosomal recessive disorder gyrate atrophy of the choroid and retina, a progressive chorioretinal degeneration leading to blindness ([153245](https://omim.org/entry/258870)) ([Link](https://pubmed.ncbi.nlm.nih.gov/1682785/)). ## Cellular Roles and Expression Landscape The expression profile of [OAT](/details-gene/4942) highlights its fundamental role in tissues characterized by high metabolic activity and rapid cellular turnover. - **Epithelial and Secretory Cells:** **Overall**, the gene shows its highest significance in epithelial lineages. It is a top marker in [intestinal epithelial cell](/details-cell/CL0002563) (CSI: 58.50), [colonocyte](/details-cell/CL1000347) (CSI: 42.03), and [enterocyte](/details-cell/CL0000584) (CSI: 36.46), suggesting a crucial role in maintaining the function and integrity of the gastrointestinal barrier. This pattern extends to other barrier tissues, with high significance in [respiratory suprabasal cell](/details-cell/CL4033048) (CSI: 28.14) and [multi-ciliated epithelial cell](/details-cell/CL0005012) (CSI: 18.50). Its activity is likely required to supply proline for structural proteins and glutamate for energy production in these demanding environments. - **Stem and Progenitor Cells:** [OAT](/details-gene/4942) is also significantly expressed in several progenitor populations, including general [stem cell](/details-cell/CL0000034) populations (CSI: 29.58), [intestinal crypt stem cell of small intestine](/details-cell/CL0009017) (CSI: 23.63), and [respiratory basal cell](/details-cell/CL0002633) (CSI: 22.44). This suggests that OAT-mediated metabolic pathways are important for supporting the self-renewal and differentiation processes necessary for tissue homeostasis and repair. - **Other Cell Types:** While predominantly an epithelial marker, [OAT](/details-gene/4942) also shows moderate significance in [blood vessel endothelial cell](/details-cell/CL0000071) (CSI: 17.50) and certain immune subsets like [central memory CD8-positive, alpha-beta T cell](/details-cell/CL0000907) (CSI: 16.11), which may reflect the metabolic requirements for endothelial barrier function and T cell survival. ## Pathways and Molecular Function The functional annotations for [OAT](/details-gene/4942) confirm its role as a central enzyme in amino acid metabolism, primarily within the mitochondrion. - **Molecular Function:** The primary molecular function is defined as `Ornithine aminotransferase activity` ([GO:0004587](https://www.ebi.ac.uk/QuickGO/term/GO:0004587)). It acts as a homodimer, indicated by `Identical protein binding` ([GO:0042802](https://www.ebi.ac.uk/QuickGO/term/GO:0042802)), and utilizes pyridoxal phosphate as a cofactor, reflected by `Pyridoxal phosphate binding` ([GO:0030170](https://www.ebi.ac.uk/QuickGO/term/GO:0030170)). - **Biological Process:** [OAT](/details-gene/4942) is integral to several interconnected metabolic processes. It participates in the `Arginine catabolic process to glutamate` ([GO:0019544](https://www.ebi.ac.uk/QuickGO/term/GO:0019544)) and the `L-proline biosynthetic process` ([GO:0055129](https://www.ebi.ac.uk/QuickGO/term/GO:0055129)). These activities are part of the broader `Metabolism of amino acids and derivatives` ([R-HSA-71291](https://reactome.org/content/detail/R-HSA-71291)) and `Glutamate and glutamine metabolism` ([R-HSA-8964539](https://reactome.org/content/detail/R-HSA-8964539)) pathways. Its involvement in `Visual perception` ([GO:0007601](https://www.ebi.ac.uk/QuickGO/term/GO:0007601)) is a direct consequence of its essential role in retinal health, where its deficiency leads to gyrate atrophy. - **Cellular Location:** The enzyme is predominantly localized to the `Mitochondrial matrix` ([GO:0005759](https://www.ebi.ac.uk/QuickGO/term/GO:0005759)), consistent with its role in core energy and amino acid metabolism. ## Research Directions The specific expression pattern and known disease association of [OAT](/details-gene/4942) suggest several avenues for future investigation. **Proposed Hypotheses:** 1. Given its high significance in intestinal epithelial and stem cells, [OAT](/details-gene/4942) activity may be indispensable for maintaining gut barrier integrity under physiological stress by providing metabolic precursors (e.g., proline) for collagen synthesis and rapid cell proliferation during tissue repair. 2. The high expression of [OAT](/details-gene/4942) in respiratory basal and suprabasal cells suggests a critical role in the regenerative capacity of the airway epithelium following injury, where its metabolic flux may regulate the balance between stem cell self-renewal and differentiation into specialized ciliated and secretory cells. **Key Experimental Approach:** To test the first hypothesis regarding gut barrier function, a compelling approach would be to utilize an *in vitro* intestinal organoid model derived from human induced pluripotent stem cells (iPSCs). * **Methodology:** The [OAT](/details-gene/4942) gene would be knocked out in iPSCs using CRISPR-Cas9 technology. These knockout and isogenic control iPSCs would then be differentiated into mature intestinal organoids. The organoids would be subjected to inflammatory or chemical injury (e.g., using TNF-alpha or dextran sulfate sodium). * **Analysis:** Barrier function could be quantitatively assessed by measuring the permeability of the organoid monolayer to FITC-dextran. Cell proliferation rates could be measured via EdU incorporation assays, while changes in cell composition and structural integrity would be analyzed using immunofluorescence for markers of different epithelial lineages and tight junction proteins. **Therapeutic Potential:** The therapeutic relevance of [OAT](/details-gene/4942) is primarily in the context of its deficiency causing gyrate atrophy. As this is a loss-of-function monogenic disorder, therapeutic strategies would aim at **restoration of function** rather than inhibition. Potential approaches could include AAV-mediated gene therapy to deliver a functional copy of the [OAT](/details-gene/4942) gene to retinal cells or substrate reduction therapies aimed at lowering systemic ornithine levels. Due to its central role in metabolism in healthy tissues, especially epithelial barriers, [OAT](/details-gene/4942) is likely a poor candidate for systemic inhibition in other diseases such as cancer, as this would be expected to cause significant on-target toxicity.

Genular Protein ID: 788756170

Symbol: OAT_HUMAN

Name: Ornithine aminotransferase, mitochondrial

UniProtKB Accession Codes:

Database IDs:

Citations:

PubMed ID: 3456579

Title: Molecular cloning of human ornithine aminotransferase mRNA.

PubMed ID: 3456579

DOI: 10.1073/pnas.83.5.1203

PubMed ID: 3816496

Title: Investigation of gyrate atrophy using a cDNA clone for human ornithine aminotransferase.

PubMed ID: 3816496

DOI: 10.1089/dna.1.1986.5.493

PubMed ID: 2507357

Title: Molecular cloning and nucleotide sequence analysis of mRNA for human kidney ornithine aminotransferase. An examination of ornithine aminotransferase isozymes between liver and kidney.

PubMed ID: 2507357

DOI: 10.1016/0014-5793(89)81110-x

PubMed ID: 3170546

Title: Human ornithine-delta-aminotransferase. cDNA cloning and analysis of the structural gene.

PubMed ID: 3170546

DOI: 10.1016/s0021-9258(18)68219-5

PubMed ID: 2373169

Title: Analysis of the human ornithine aminotransferase gene family.

PubMed ID: 2373169

DOI: 10.1016/0014-4835(90)90126-f

PubMed ID: 14702039

Title: Complete sequencing and characterization of 21,243 full-length human cDNAs.

PubMed ID: 14702039

DOI: 10.1038/ng1285

PubMed ID: 17974005

Title: The full-ORF clone resource of the German cDNA consortium.

PubMed ID: 17974005

DOI: 10.1186/1471-2164-8-399

PubMed ID: 15164054

Title: The DNA sequence and comparative analysis of human chromosome 10.

PubMed ID: 15164054

DOI: 10.1038/nature02462

PubMed ID: 15489334

Title: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).

PubMed ID: 15489334

DOI: 10.1101/gr.2596504

PubMed ID: 1682785

Title: Molecular pathology of gyrate atrophy of the choroid and retina due to ornithine aminotransferase deficiency.

PubMed ID: 1682785

PubMed ID: 3754226

Title: The primary structure of ornithine aminotransferase. Identification of active-site sequence and site of post-translational proteolysis.

PubMed ID: 3754226

DOI: 10.1016/0014-5793(86)81219-4

PubMed ID: 21269460

Title: Initial characterization of the human central proteome.

PubMed ID: 21269460

DOI: 10.1186/1752-0509-5-17

PubMed ID: 24275569

Title: An enzyme assisted RP-RPLC approach for in-depth analysis of human liver phosphoproteome.

PubMed ID: 24275569

DOI: 10.1016/j.jprot.2013.11.014

PubMed ID: 25944712

Title: N-terminome analysis of the human mitochondrial proteome.

PubMed ID: 25944712

DOI: 10.1002/pmic.201400617

PubMed ID: 9309222

Title: Human ornithine aminotransferase complexed with L-canaline and gabaculine: structural basis for substrate recognition.

PubMed ID: 9309222

DOI: 10.1016/s0969-2126(97)00258-x

PubMed ID: 9514741

Title: Crystal structure of human recombinant ornithine aminotransferase.

PubMed ID: 9514741

DOI: 10.1006/jmbi.1997.1583

PubMed ID: 9878407

Title: Crystal structure of human ornithine aminotransferase complexed with the highly specific and potent inhibitor 5-fluoromethylornithine.

PubMed ID: 9878407

DOI: 10.1006/jmbi.1998.2289

PubMed ID: 3375240

Title: Molecular basis of ornithine aminotransferase deficiency in B-6-responsive and -nonresponsive forms of gyrate atrophy.

PubMed ID: 3375240

DOI: 10.1073/pnas.85.11.3777

PubMed ID: 2793865

Title: Point mutation affecting processing of the ornithine aminotransferase precursor protein in gyrate atrophy.

PubMed ID: 2793865

DOI: 10.1016/s0021-9258(18)71513-5

PubMed ID: 1612597

Title: Strand-separating conformational polymorphism analysis: efficacy of detection of point mutations in the human ornithine delta-aminotransferase gene.

PubMed ID: 1612597

DOI: 10.1016/0888-7543(92)90258-t

PubMed ID: 1737786

Title: Ornithine delta-aminotransferase mutations in gyrate atrophy. Allelic heterogeneity and functional consequences.

PubMed ID: 1737786

DOI: 10.1016/s0021-9258(19)50731-1

PubMed ID: 7887415

Title: Pyridoxine-responsive gyrate atrophy of the choroid and retina: clinical and biochemical correlates of the mutation A226V.

PubMed ID: 7887415

PubMed ID: 7668253

Title: A single amino acid substitution within the mature sequence of ornithine aminotransferase obstructs mitochondrial entry of the precursor.

PubMed ID: 7668253

PubMed ID: 23076989

Title: Functional analysis of missense mutations of OAT, causing gyrate atrophy of choroid and retina.

PubMed ID: 23076989

DOI: 10.1002/humu.22233

Sequence Information:

  • Length: 439
  • Mass: 48535
  • Checksum: E9D0636824A83220
  • Sequence:
  • MFSKLAHLQR FAVLSRGVHS SVASATSVAT KKTVQGPPTS DDIFEREYKY GAHNYHPLPV 
    ALERGKGIYL WDVEGRKYFD FLSSYSAVNQ GHCHPKIVNA LKSQVDKLTL TSRAFYNNVL 
    GEYEEYITKL FNYHKVLPMN TGVEAGETAC KLARKWGYTV KGIQKYKAKI VFAAGNFWGR 
    TLSAISSSTD PTSYDGFGPF MPGFDIIPYN DLPALERALQ DPNVAAFMVE PIQGEAGVVV 
    PDPGYLMGVR ELCTRHQVLF IADEIQTGLA RTGRWLAVDY ENVRPDIVLL GKALSGGLYP 
    VSAVLCDDDI MLTIKPGEHG STYGGNPLGC RVAIAALEVL EEENLAENAD KLGIILRNEL 
    MKLPSDVVTA VRGKGLLNAI VIKETKDWDA WKVCLRLRDN GLLAKPTHGD IIRFAPPLVI 
    KEDELRESIE IINKTILSF